linux-kernel - Re: [Patch] ARM: dts: keystone: add pll controller syscon entry

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Message-ID: <537CEEFA.8080805@cogentembedded.com>
Date:	Wed, 21 May 2014 22:22:50 +0400
From:	Sergei Shtylyov <sergei.shtylyov@...entembedded.com>
To:	Ivan Khoronzhuk <ivan.khoronzhuk@...com>, santosh.shilimkar@...com
CC:	devicetree@...r.kernel.org, grygorii.strashko@...com,
	linux@....linux.org.uk, linux-kernel@...r.kernel.org,
	robh+dt@...nel.org, m-karicheri2@...com, galak@...eaurora.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [Patch] ARM: dts: keystone: add pll controller syscon entry

On 05/21/2014 10:18 PM, Sergei Shtylyov wrote:

>> The pll controller register set includes sets of registers with
>> different purposes, so it's logically to add syscon entry to be able
>> to access them from appropriate places.

>> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@...com>
>> ---

>> Based on linux-next/master

>>   arch/arm/boot/dts/keystone.dtsi | 5 +++++
>>   1 file changed, 5 insertions(+)
>
>> diff --git a/arch/arm/boot/dts/keystone.dtsi b/arch/arm/boot/dts/keystone.dtsi
>> index d9f99e7..5e67c5b 100644
>> --- a/arch/arm/boot/dts/keystone.dtsi
>> +++ b/arch/arm/boot/dts/keystone.dtsi
>> @@ -66,6 +66,11 @@
>>           ranges = <0x0 0x0 0x0 0xc0000000>;
>>           dma-ranges = <0x80000000 0x8 0x00000000 0x80000000>;
>>
>> +        pllctrl: pll_controller {

>    I think it's better to follow the pattern established by "reset-controller"
> and use hyphen ISO dash in the node name. This is also a common practice to

    Oops, hyphen and dash are basically the same thing; I meant 
s/dash/underscore/.

> use hyphens in the device trees overall.

>> +            compatible = "ti,keystone-pllctrl", "syscon";
>> +            reg = <0x2310000 0x200>;
>> +        };
>> +
>>           rstctrl: reset-controller {
>>               compatible = "ti,keystone-reset";
>>               reg = <0x023100e8 4>;    /* pll reset control reg */
>>

WBR, Sergei

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